Lobster, green asparagus & basil tartine by Olivier Perret

Ingredients

• 2 Quebec lobsters (1.25 lb/1.5 lb)
• 8 beautiful green asparagus
• 150 ml of vegetable oil
• 1 tbsp. Dijon mustard
• 1 egg yolk
• 1 lemon
• 2 oranges
• 50 ml of olive oil
• 4 nice slices of a loaf of farmhouse bread
• 1 tbsp. chives
• 1 tbsp. basil
• 1 clove of garlic
• 1 French shallot or 1 half onion
• 1/2 carrot
• 1 stick of green celery
• 1 green leek (about 10 cm)
• 1 sprig of thyme
• A pinch of Espelette pepper
• Salt
• pepper